9. Miami Marlins
Average ticket price: $29.62
The former Florida Marlins have a new name, a new hangar-like ballpark, a new manager in Ozzie Guillen, a new documentary special on Showtime and a new crop of free agents, including former Mets shortstop Jose Reyes and Chicago pitching mainstays Mark Buehrle and Carlos Zambrano. All that "new" comes at a 55.4% premium from last season, while the cost of a day at the park for a family of four including concessions, souvenirs and parking jumped 42.4%. At least they now have the world's ugliest lawn ornament for their trouble.